Custom Blocks are non-vanilla blocks which have unique purposes on Horizon's End.
Ores
Aluminum Ore is an ore block which can be mined to obtain 1 Raw Aluminum.
Chetherite Ore is an ore block which can be mined to obtain 1 Chetherite.
Titanium Ore is an ore block which can be mined to obtain 1 Raw Titanium.
Uranium Ore is an ore block which can be mined to obtain 1 Raw Uranium.
Ore Blocks
An Aluminum Block is crafted from 9 Aluminum Ingots.
A Chetherite Block is crafted from 9 Chetherite.
A Titanium Block is crafted from 9 Titanium Ingots.
A Uranium Block is crafted from 9 Uranium.
A Raw Aluminum Block is crafted from 9 Raw Aluminum.
A Raw Titanium Block is crafted from 9 Raw Titanium.
A Raw Uranium Block is crafted from 9 Raw Uranium.
Processed Blocks
A Steel Block is crafted from 9 Steel Ingots.
An Enriched Uranium Block is crafted from 9 Enriched Uranium.
A Netherite Casing is crafted from 6 Netherite Blocks, and is used in the construction of Tier 4 Mining Lasers.
A Superconductor Block is crafted from 9 Superconductors.
Reactor Cores
A Battlecruiser Reactor Core must be housed inside of a Supercapital Reactor in order to pilot a Battlecruiser.
A Cruiser Reactor Core must be housed inside of a Supercapital Reactor in order to pilot a Cruiser.
A Barge Reactor Core must be housed inside of a Supercapital Reactor in order to pilot a Barge.